using UnityEngine;
using System.Collections;

public class CameraScript : MonoBehaviour {
	
	
	void Start()
	{
	 	// set the desired aspect ratio (the values in this example are
	    // hard-coded for 16:9, but you could make them into public
	    // variables instead so you can set them at design time)
	    float targetaspect = 16.0f / 9.0f;
	
	    // determine the game window's current aspect ratio
	    float windowaspect = (float)Screen.width / (float)Screen.height;
	
	    // current viewport height should be scaled by this amount
	    float scaleheight = windowaspect / targetaspect;
	
	    // obtain camera component so we can modify its viewport
	    Camera camera = GetComponent<Camera>();
	
	    // if scaled height is less than current height, add letterbox
	    if (scaleheight < 1.0f)
	    {  
	        Rect rect = camera.rect;
	
	        rect.width = 1.0f;
	        rect.height = scaleheight;
	        rect.x = 0;
	        rect.y = (1.0f - scaleheight) / 2.0f;
	        
	        camera.rect = rect;
	    }
	    else // add pillarbox
	    {
	        float scalewidth = 1.0f / scaleheight;
	
	        Rect rect = camera.rect;
	
	        rect.width = scalewidth;
	        rect.height = 1.0f;
	        rect.x = (1.0f - scalewidth) / 2.0f;
	        rect.y = 0;
	
	        camera.rect = rect;
		}
	}
}
